Home / 2,285.78-3,154.64-1,291.23

Finding the Fourth Proportional to 2,285.78, 3,154.64 and 1,291.23

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Solution

The fourth proportional to 2,285.78, 3,154.64 and 1,291.23 is: 1,782.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,285.78 : 3,154.64 = 1,291.23 : x
  2. Step 2: Convert to fraction form
    2,285.78/3,154.64 = 1,291.23/x
  3. Step 3: Cross multiply
    2,285.78x = 3,154.64 × 1,291.23
  4. Step 4: Simplify right side
    2,285.78x = 4,073,365.81
  5. Step 5: Solve for x
    x = 4,073,365.81/2,285.78
  6. Step 6: Final answer
    x = 1,782.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.